Refrigerator



FIG. 1 is a front perspective view of a refrigerator embodying my new design;

FIG. 2 is a top plan view of the design;

FIG. 3 is a left side elevational view of the design;

FIG. 4 is a bottom plan view of the design;

FIG. 5 is a is a front elevational view of the design;

FIG. 6 is a is a rear elevational view of the design; and,

FIG. 7 is a right side elevational view of the design.

The broken line portions of the drawings are shown for illustrative purposes and form no part of the present invention. 

The ornamental design for a refrigerator, as shown and described. 